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W. H. BOYDEN, RQCKLANILARHODE ISLAND. Letters Patent No. 84,193,1lated December 8, 1868.

IMPROVEMENT IN ,DRESSER-COPPER" -FOR WAM-DRESSING- MACHINES.

` "Ho -e The Schedule referred to in these Letters Patent and making part of the same.`

To all whom it concern:

Be it known that I, W. H. BOYDEN, of Rockland, in the -county of Providence, and State of Rhode Island, have invented a new and improved Dresser-Copper; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the accompanying drawings, making a part of this speciiication, in which- Figure l is a perspective view.

Figure 2, a front elevation of the rack detached..

Figure 3 is a rear elevation of the clamp T.

The object of this invention is to construct a dressercopper for dressing cotton-warp, in such a manner that the edges of the copper, with which the threads come in contact, can be finished smoother than heretofore, and when in use will wear away more slowly, and so that when the parts of the metal in contact with the threads become worn to any extent, so as to endanger the threads, they can, without cutting out the threads and reaming out the copper, be adjusted Iin a few minutes, so as to bring a new surface of metal into contact with the threads, thereby saving'a great deal' of time and labor, and rendering the instrument much more convenient to operate than heretofore.-

Most of the coppers hitherto employed in dressing cotton-warp, are made from three to four inches wide, and from two and a half to four and a half feet long, having a series of small holes punched through them to receive the threads. The threads working in the y holes are apt to wear into the copper, after which any little bunch or inequality in them causes them to break. All the threads must then be cut out, and the copper reamed, which takes from two to three days, during which the dresser is lying idle and the work is suspended. When the holes have been reamed out, they are apt to be left with sharp edges, which cut the yarn,

and produce a great deal of trouble to the operators.

This invention is designed to do away with all these difficulties, and to combine in an easy and simple manner all the advantages hereinabove referred to.

In the drawings, A is a wooden frame, supporting a rack, B, one edge of which is set in a groove in the inner edge of the frame, and secured in position by a metallic plate, C, fastened to the frame by screws, the other edge droppin ginto a rebate or counter-sink in the inner edge of the opposite side of the frame, and held in place by angular' pins, hooks,`or buttons c c, The rack is made as shown in fig. 2, having the side strips b b strengthened by stout iron rods fj; and having the through the end-piece of the frame, and has a screwnut with a thumb-piece, n, connected with it, whereby the wires may be made to receive any required tension.

The instrument is then ready for use, the threads being inserted, as shown in red lines in the drawings.

The two top threads draw down, and the two bottom.

ones up, so that, in practical operation, the wires take np nearly all the friction of thethreads or yarn, Very little coming on the rack. Two threads never touch one wire at the top and bottoni, but each thread draws on its own wire.

The advantages of this method of construction are, iirst, that it relieves the threads or yarn so that the latter is enabled to pass through the rack, and over or under the wires, without danger of being cnt; secondly, when a workman is putting athread through from the back side of the rack, he can see the end of the thread through the rack, and will know exactly where to catch it with his other hand and thirdly,the Wires can be taken out, or changed, and the edges of the bars e ecl smoothed, without cutting out the dresser.

Should the wires intime become cut in one place, they can be partially turned, orthey can be Amoved longitudinally, or the rack itself might be moved longitudinally, so as to bring the threads in contact with a fresh, unworn surface.

Having thus described my invention,

What I claim as new, and desire to secure by Letters Patent, isl 1,"Ihe combination of the rack vB and wires lmfm, in a frame, A, substantially as and for the purposes specified.

2. The arrangement of the rack B, ame A, wires m m m m, thumb-screwsr n n, and clamp T, substantially as shown and described.

. W. H. BOYDEN.

Witnesses:

JAcoBvW. WARNER, CHARLES G. Hint. 

